<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="./jquery.js"></script>
</head>
<body>
    <button>动画</button>
    <div class="box" style="width: 200px;height: 200px;background: aqua;">fwf</div>
</body>
<script>
    $('button').click(function(){
        $('.box').animate({fontSize:'255px',height:'500px',width:'500px',opacity:'0.2'})
    })
</script>
</html>